Remaining electrical issues?

[porschetub]

Just trying to wake up my electrics after a 15yr sleep,condition of wiring is great no hack jobs, burnt insulation or the usual woes I have seen with these old cars.
My main issue is the wipers they were DOA,pulled the 924 switch and found several issues,repaired that but could not get "keyed " power from the fuse board,seemed odd as everthing on other switched supplys is working.
Put a jumper to the permanant live side of fusebox and bingo it all worked,certainly not desirable but it proved it all works.
Is there more than one switched supply from the ignition ?
Never been good @ reading electrical drawings but have reasonable skills @ fault finding
Could anyone point me in the right direction.......or do I just have a bad switch?,thanks.

[Dave at Pelican Parts]

Fuse #8 and fuse #9 both should carry switched power. #8 gets its power from one of the relays on top of the fuse panel, but that relay is switched on by power from the ignition switch.

--DD

[Tobra]

I bet the relay is going/gone bad. A lot of the electrical gear is the same as a VW of similar vintage.

[porschetub]

Thanks for the replys,looks like #8 is the culprit,have plenty of spare relays so maybe worth trying,my next logical step would be to probe the wiring for current from the switch back with the key on,then see from there,cheers.

[porschetub]

Originally Posted by Dave at Pelican Parts

Fuse #8 and fuse #9 both should carry switched power. #8 gets its power from one of the relays on top of the fuse panel, but that relay is switched on by power from the ignition switch.

--DD

Is there a wiper relay?,research indicated I don't have one,the relays in the top of the board are assigned to other functions,Dave please tell me more...are you saying its powered off one of those? sorry a little ,cheers.

[porschetub]

Pulled ignition switch and test all functions...fine,what to do,checked and checked again...getting very frustrated.
Finally found female terminal in ignition plug not contacting,a wee tweak with a fine screwdriver and we have connection.
Electrics suck SO much can be wrong or something simple.

[itchybro]

Originally Posted by porschetub

Electrics suck SO much can be wrong or something simple.

TELL me about it!!

[porschetub]

Short lived result to my wiper hassles,still have power to switch but now wipers not functioning,the 924 switch wasn't great and I had to repair it.
My original spare is no use as I can't run my electric washer pump off it.
Trying to find a replacement in my country is a hassle,not interested in the Chinese ''knock off '' replacement ones,appears they have a bad rep.
Still have the following other issues to sort:
Horns not working ...no biggie,
Ventilation blower.....OP had removed some wires,should be fairly straight forward ?,
Turn signal gauge lights??,LH side is fine,RH side causes both lamps to run,this ones got me stumped,exterior lamps and hazard warning works fine,
Interior light...no power to hotside or continuity to door switch earth side.
I think I will drink some beer and revisit today the sober approach hasn't worked.

[Dave at Pelican Parts]

You may have a power and a ground swapped on one of the two turn signal indicators in the tach. (I hope you don't have a 74+ wiring harness; the 74+ cars only had the one indicator--even early 74s with two lights were set up to blink both at the same time!)

Your photo looks pretty bad, though. The brown wire should have full-time ground, the black/red wire should have full-time power, and the brown/white should have ground when either door is open. Hooking the black/red directly to either one of the others should result in a blown fuse at the very least!

--DD

[porschetub]

Originally Posted by Dave at Pelican Parts

You may have a power and a ground swapped on one of the two turn signal indicators in the tach. (I hope you don't have a 74+ wiring harness; the 74+ cars only had the one indicator--even early 74s with two lights were set up to blink both at the same time!)

Your photo looks pretty bad, though. The brown wire should have full-time ground, the black/red wire should have full-time power, and the brown/white should have ground when either door is open. Hooking the black/red directly to either one of the others should result in a blown fuse at the very least!

--DD

Never thought of that,car is 74 model,Jeff B's gauge diagram only shows 1 wire however.
I definately have the light blue/white stripe indicator lamp wire and found a green/black stripe (from memory )which powers off the indicator relay also,maybe that is wrong and causing this issue ?but wonder what the other wires for.
Ha Ha,no thats a ''draw wire" I used to get the wires up the backpad and that was done with battery lead off,sounds like I have the right ones up there,just nobody home in the power or earth department.
Most days on the wiring yield some results,so maybe I'am getting there slowly.

[porschetub]

Good progress yesterday,went through the indicator gauge lamps and established that I do in fact have a single wire function as Dave suggested(blue/white) for left and right sides,all exterior lamps and hazard warning all functioning normally.
Have had an ongoing issue with headlight raised height ,the rh side one was all screwed up,so I started by readjusting the pivot points till it lined up with the shut lines of the hood and found the motor was out also,some improvement but still not right.
The rh side had clearly been apart before and not just for the H4 install I guessed it was to replace the pivot bushes which are new,then it dawned on me that the motor was pivoting the light in the wrong sweep,popped the main pivot arm 1 notch on the drive and bingo sorted .
Went into the interior light and traced those curcuits,popped in a new LED lamp and that now works but not by the door switches...don't really care for that function anyway.

[porschetub]

Bloody horns said that they would be cake,replaced old hella air horns for 2 good high and low range horns from another VW,tested both before fitting all good,grounded horn wire to steering shaft nothing??
Checked relay and it was toast,replaced with spare and retested,checked the following;
continuity from column to relay (brown /red wire) good,
continuity from horns to relay good (green /black wire)
power @ red/white wire to relay live when key on
power to pin 30 on relay 13 volts,(red wire) constant live.

Looped constant live red and red/white wire @ relay ,horns very loud.
What next is the question,I've done the research and no result????.
Just to add to my grief the wipers still don't work after repairing the switch again,I ran a separate power supply direct to the motor and they go fine???? as before stripping the switch down...the contacts were very dirty however.

Edit......due to supplying power from another supply I strongly suspect the ignition switch is faulty so a new one on the way from Pelican...standby.